South Dakota a possible break in a decades old cold case human remains. Haven't found in the car that was submerged for decades in -- creek police believe they could be knows of two teens who disappeared. Back in 1971. Those girls would now be turning sixty years old. Their families have been notified.

This transcript has been automatically generated and may not be 100% accurate.

Now Playing: Massive storm causes flooding rains and water rescues in Dallas, Texas

Now Playing: Evangelist Billy Graham, 99, dies in his North Carolina home

Now Playing: Billy Graham, in his own words, about facing death and the Lord

Now Playing: The host of 'Jeopardy' will be moderating a gubernatorial debate

Now Playing: 4th-grader begs sheriff for more security at school in Tennessee

Now Playing: Famous quotes from the Rev. Billy Graham

Now Playing: Alleged school shooting thwarted in California

Now Playing: Evangelist Billy Graham dies at 99

Now Playing: USA Swimming faces allegations of sexual abuse

Now Playing: {{itm.title}}

{"id":20368651,"title":"South Dakota Cold Case: Skeletal Remains Found in Car","duration":"0:20","description":"Old Studebaker found in a creek is believed tied to 1971 disappearance of two teenage girls.","url":"/GMA/video/south-dakota-cold-case-skeletal-remains-found-car-20368651","section":"GMA","mediaType":"default"}